单项选择题

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成书于清朝的章回小说《西游记》，开创了长篇神魔小说的先河。（）

答案：

A.正确

B.错误

正确答案：B

解析：成书于明朝。

单项选择题

The relation R is represented by the directed graph below. Which statement about it is right? ( )

A、R is not antisymmetric
B、R is reflexive
C、R is symmetric
D、R is transitive